Punch ing-machine



(No Model?) J. A. NICHOLS.

PUNCHING MACHINE.

No. 584,236. Patented June 8,1897.

@uM/Mmmm.

UNITED STATES PATENT EEicE.

JOHN A. NICHOLS, OF PITTSBURG, PENNSYLVANIA.

PUNCHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 584,236, dated June 8,1897. Application filed October 5, 1896. Serial No. 607,846. (No model.)

To @ZZ whom it may concern.-

Beit known that I, JOHN A. NIcHoLs, a citizen of the United States ofAmerica, residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inPunching- Machines, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to certain new and useful improvements inpunching-machines, and relates more particularly to that class that aredesigned to be employed on plates and girders employed in theconstruction of structural and bridge work.

The invention has for its object to construct a punching-machine of theabove-described class whereby the cylinder carrying the punches may berevolved in either direction and punching the holes either in a straightrow or in a zigzag position, as may be desired.

A still further object of the invention is to construct a punching-1nachine carrying three or more rows or sets of punches whereby a row ofholes -may be made throughout the plates or girders to receive the cordand stiffening-angles, as may be required or necessary, the punches forthis operation being in the same cylinder as the ones used for punchingthe rows of straight or zigzag holes; furthermore, a punching-machinethat will be extremely simple in its construction, strong,

` durable, eectual in its operation, and comparatively inexpensive tomanufacture.

Vith the above and other objects in view the invention iinall y consistsin the novel construction, combination, and arrangement to behereinafter more specifically described, and particularly pointed out inthe claims.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this specification, and whereinlike letters and numerals of reference indica-te similar partsthroughout the several views, in which- Figure l is a side elevation ofmy improved punching-machine. Fie'. 2 is a transverse vertical sectionalview of the cylinder, showing one row of punches in position. Fig. 3 isan end view, partly in section. Fig. et is aside view of the lock tohold the cylinder in the desired position and the operating-lever forthe same.

In order to clearly illustrate my invention, I have shown in sideelevation, Fig. l, an entire punching-machine, and I do not wish to beunderstood as claiming as new the frame and general construction of themachine, my invention being limited to the cylinder carrying the punchesand to the manner of operating and securin g the same. For the purposeof illustrating this I have shown in Fig. 2 the cylinder d, which issecured to the ramhead b', said ram-head and cylinder being supported inthe machine proper in any desired manner. The cylinder is provided withgrooves c c, in which the punches d are dovetailed, and instead of theone rowof punches, as in the ordinary construction, I have providedthree or more rows to be used as occasion may require and as will bcmore fully stated.

In order to bring the row of punches desired into use and hold the same,I have provided a lock consisting of the segment-plate e, carrying thehand-lever f, and notches around the segment to receive the bar g,operating through the casing 7L and provided with a coil-spring 7a, encircling same between the collars Z Z. This bar g is pivotally attachedto a lever m, provided with a slot n at its lower end, said slotengaging on a pin in the foot-treadle o, which is pivotally secured atits inner end to any suitable place on the machine.

In the operation where it is desired to punch a single row of holes oneach edge of the plate, which is handled in the machine in any of thewell-known manners, thecylinder is not rotated, but remains in the sameposition and punches the holes at each stroke of the machine.

Then it is desired to punch two rows of.

holes in the zigzag manner, the cylinder is partly revolved by using thehan d-lever, the lock on the same being released bypressure on thefoot-lever, thus employing two rows of punches, and as the cylinder isrevolved each punch will be brought into a vertical line with thepunch-die. To more fully illustrate IOO this, I will designate the slotsas l 2 3. Then slot l, carrying the punches, will punch the two outerholes, and 2 the two inner holes, While 23 will punch the holes requiredfor the cord or stitEening-angles. By the lever f, attached to thecylinder, the same can be changed upon the rain-head, releasing the endof the upward stroke to bring either one of the three sets of punches inposition to punch the next hole required. lt will therefore be observedthat to punch one row of holes along the edge of the plate the cylinderremains in the saine position, while to punch two rows or zigzag thepositions are changed from l to 2 and then back to I, and when the slotsfor stiieningrods are required slot 3 is brought into use.

It will be observed that as the cylinder is revolved and the bar gengages inthe notch in the segment corresponding to the groove in thecylinder it will hold this groove in position during the downward strokeof the punch, and the cylinder is released by the foottreadle, asheretofore described.

It will be observed that this construction of the cylinder will not belilnited to the three slots, but that one or as many more may beemployed as may be desired, and it will also be observed that variouschanges may be made in the details of construction Without lthe plateand cylinder, a spring-pressed bar engaging the notches of the plate,and connections for operating the bar, substantially ,as described.

2. In combination, a rain-head, a cylinder secured thereto, punchesdovetailed inrefcesses of the cylinder, said punches being arranged inrows, means for changing the position of the punches and detentsv forholding the cylinder in its adjusted position, substan- Stially asdescribed'- In testimony whereof I afixmy signature in presence of twowitnesses.

JOI-IN A. NICHOLS.

lVitnesses:

A. M. WILSON, H. E. SEIBERT.

